Seismologists say a strong earthquake has struck off the coast of the South Pacific island nation, Vanuatu.

Officials at the Pacific Tsunami Warning Center in the U.S. state of Hawaii say there is no threat of a tsunami.

The U.S. Geological Survey says the 6.7 magnitude quake hit 75 kilometers southeast of the city of Lugansville on Vanuatu's second largest island of Espiritu Santo. Scientists say the earthquake's epicenter was 150 kilometer below the earth's surface.

There are no immediate reports of any injuries or major property damage.

Vanuatu is an archipelago of some 80 islands located about 2,200 kilometers off the northeast coast of Australia.